Absolute wavelength shifts - A new diagnostic for rapidly rotating stars
Dravins, Dainis LU
(2004)
Stellar rotation
p.27-32
- Abstract
- Accuracies reached in space astrometry now permit. the accurate determination of astrometric radial velocities. without any use of spectroscopy. Knowing this true stellar motion, spectral shifts; intrinsic to stellar atmospheres can be identified, for instance gravitational redshifts and those caused by, velocity fields on stellar surfaces. The astrometric accuracy is independent. of any spectral complexity, such as the smeared-out line profiles of rapidly rotating stars. Besides a better determination of stellar velocities, this permits more precise studies of atmospheric dynamics, such as possible modifications of stellar surface convection (granulation) by rotation-induced forces, as well as a potential for observing meridional flows... (More)
- Accuracies reached in space astrometry now permit. the accurate determination of astrometric radial velocities. without any use of spectroscopy. Knowing this true stellar motion, spectral shifts; intrinsic to stellar atmospheres can be identified, for instance gravitational redshifts and those caused by, velocity fields on stellar surfaces. The astrometric accuracy is independent. of any spectral complexity, such as the smeared-out line profiles of rapidly rotating stars. Besides a better determination of stellar velocities, this permits more precise studies of atmospheric dynamics, such as possible modifications of stellar surface convection (granulation) by rotation-induced forces, as well as a potential for observing meridional flows across stellar surfaces. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/255030
- author
- Dravins, Dainis
LU
- organization
- publishing date
- 2004
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Stellar Rotation; IAU Symposium
- editor
- Maeder, A. and Eenens, P.
- issue
- 215
- pages
- 27 - 32
- publisher
- Astronomical Society of the Pacific (ASP)
- conference name
- Stellar rotation
- conference location
- Cancun, Mexico
- conference dates
- 2002-11-11 - 2002-11-15
- external identifiers
-
- wos:000226161500007
- ISSN
- 0074-1809
- language
- English
- LU publication?
- yes
- id
- a3cfccc7-5291-4c3d-9546-813051fee3c3 (old id 255030)
- date added to LUP
- 2016-04-01 16:15:29
- date last changed
- 2020-06-16 15:04:58
@inproceedings{a3cfccc7-5291-4c3d-9546-813051fee3c3,
abstract = {{Accuracies reached in space astrometry now permit. the accurate determination of astrometric radial velocities. without any use of spectroscopy. Knowing this true stellar motion, spectral shifts; intrinsic to stellar atmospheres can be identified, for instance gravitational redshifts and those caused by, velocity fields on stellar surfaces. The astrometric accuracy is independent. of any spectral complexity, such as the smeared-out line profiles of rapidly rotating stars. Besides a better determination of stellar velocities, this permits more precise studies of atmospheric dynamics, such as possible modifications of stellar surface convection (granulation) by rotation-induced forces, as well as a potential for observing meridional flows across stellar surfaces.}},
author = {{Dravins, Dainis}},
booktitle = {{Stellar Rotation; IAU Symposium}},
editor = {{Maeder, A. and Eenens, P.}},
issn = {{0074-1809}},
language = {{eng}},
number = {{215}},
pages = {{27--32}},
publisher = {{Astronomical Society of the Pacific (ASP)}},
title = {{Absolute wavelength shifts - A new diagnostic for rapidly rotating stars}},
year = {{2004}},
}